search for: nprq

Hi I am trying to install the package "pheno", but it needs the package "nprq" by Roger Koenker et al. which I can I find this package? It does not seem to be on CRAN and googling also doesn't give me an URL - is it still somewhere available? Thanks, Rainer -- NEW EMAIL ADDRESS AND ADDRESS: Rainer.Krug at uct.ac.za RKrug at sun.ac.za WILL BE DISCONTINUED EN...

I'd like to mention that there is a new quantile regression package "nprq" on CRAN for additive nonparametric quantile regression estimation. Models are structured similarly to the gss package of Gu and the mgcv package of Wood. Formulae like y ~ qss(z1) + qss(z2) + X are interpreted as a partially linear model in the covariates of X, with nonparametric compone...

...Rnumber = "1 646 718", bibdate = "Sat Jan 2 17:33:21 MST 1999", URL = "http://www.amstat.org/publications/jcgs/abstracts98/jongbloed.html", acknowledgement = ack-nhfb, } ------ I know about Roger Koenker and Pin Ng's very interesting "nprq" package (and its earlier version "cobs") where one can fit splines with convexity constraints. At the moment however, we are specifically interested in the ICM algorithm for convex nonparametric regression. Thank you for pointers in advance. Martin Maechler, ETH Zurich

Dear R listers, When using smooth.spline to interpolate data, results are generally good. However, some cases produce totally unreasonable results. The data are values of pressure, temperature, and salinity from a probe that is lowered into the ocean, and the objective is to interpolate temperature and salinity to specified pressures. While smooth.spline provides excellent values at the